/**#include <stdio.h>
char * astrcat (char * str1, char * str2);
main(){
char str1 [20]= "Tiago ";
char * str2 = "ANA";
printf("%x\n",astrcat (str1, str2));
return 0;
}
**/
#include <stdio.h>
char * astrcat (char * str1, char * str2);

int main(){
char str1 [20]= "Tiago ";
char * str2 = "ANA";

char * ret = astrcat (str1, str2);

while(*ret){
	putchar(*ret);
	++ret;
}
putchar('\n');

return 0;
}
